Egyptian security officials say police have surrounded two villages outside the resort of Sharm el-Sheikh, hunting for suspects in Saturday's triple bombings that killed at least 88 people.
The officials say police believe two suspected Pakistani nationals may be hiding in the villages in the Sinai peninsula.
Earlier Monday, Egyptian police distributed photographs of six Pakistani men who were in area during the attacks but have since disappeared after leaving their passports in a hotel.
Police also say they have found the remains of what appears to be a Pakistani man at the Ghazala Gardens Hotel, which was left in ruins after a massive car-bomb explosion.
Egyptian authorities say they have rounded up nearly 100 people in connection with the bombings, but there is no word whether any detainees are considered suspects in the attack.
A group that says it is linked to al-Qaida has claimed responsibility for the bombings in an Internet statement that has not been authenticated.
Some information for this report provided by AP and Reuters.